Whether its the latest nvidia drivers or something or just the VGA cable, my 8800gt has stopped allowing 1680x1050 resolution forcing me to set it as a custom resolution in nvidia control panel.

I have heard that going to DVI (again - i stole the DVI cable i used to use for my ps3!) will solve it. Now whilst browsing the net for a DVI cable, I've noticed there is standard DVI cable...and dual link.

Will dual link be a good thing? I mean its only a dell 2007wfp (20.1") but will it allow upgrades to say 24"+ later on??